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ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations

Green Car Congress

In addition, two minivans were subjected to coastdowns to examine the similarity in derived coefficients for two duplicate vehicles of the same model. l/100 km) at 60 mph (97 km/h) to 33 mpg (7.1 The SUV, a 2009 Ford Explorer with a 4-liter V6 engine, was also tested while towing an enclosed trailer. l/100 km) at 60 mph to 22.9

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ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

The study includes various sizes of sedans, wagons, and SUVs, as well as pickup trucks, minivans and a few “muscle” and sports cars. Percent mpg decrease for a given 10 mph increase based on 74 vehicles. A comparison of the three histograms shows a slight shift toward higher mpg penalties for each 10-mph speed increase.

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Achates Power building 2.7L opposed-piston light-duty engine; exceeding CAFE 2025, Tier 3 targets at lower cost

Green Car Congress

liter OPE will deliver nominal power of 270 hp and max torque of 650 N·m (479 lb-ft); the vehicle will achieve 37 mpg—12% above the 33 mpg fully phased-in CAFE 2025 requirement for a full-size, light-duty pick-up truck (65-70 sq. That works out to an estimated window-sticker label rating of 28 mpg combined.).

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